Type-writing machine.



NO. 841,352. PATENTED JAN. l5, 1907.

G. sWB/NsoN. TYPE WRITINGMAGHINE.

APPLrogTIoN FILED N0v.14,1o6.

l l l l l l l l l l l l l r l w y y I VEA/raf? M-M n Br Ava f'rrowve UNITED STATES .ATEN yOEETOE,

GUSTAE swENSON, or PITTSRURG, PENNSYLVANIA, Assia-NOR TOY UNDERWOOD TYPEWRITER COMPANY, Orv NEw'rORR, N. Y., A CORPORATION OE NEW JERSEY.'

TYPE-WRITiNG macs-ENE..

Specication of Letters Ilatent.`

racenteaaan.' 15, 1907.

Application filed No'vember 14.1906. serial No. 343,380.

and especially to those'in which the vribbon is vibrated different distances at "the typestrokes at the will of the operator to bring djerent color-bands of the ribbon into use 15 `or to cause a single color-ribbon to be used along either edge. y

y In the Underwood type-writing machine it is usual to cause type-bars to reciprocate a curved universal bar, the latter being l zo 'mounted on a frame, and an actuator fixed upon said frame usually engages a wrist provided upon a ribbon-vibrating lever to throw the ribbon at each t e-stroke.

In order to throw the rib on diii'erent dis- 2`5 tances from normal ositi'on, I provide two wrists which are axially slidable and adapted to work in a vertical slot provided u onsaid actuator. -I connect said wrists so t at they must shift in op osite directions simultanego ously,-wl1ereby w en either wrist is brought into use the other is silenced, or, in other words, when either wrist is projected to effect a connection between/said lever and said slotted actuator the other wrist is simul- 3 5 taneously withdrawn. v

Other features and advantages will herein-.

vatter appear.

My improvements are applicable also to other makes of type-writing machinesA in .'.o which the ribbon is vibrated at thetypestrokes to cover the-printingepoint.

In the accompanying drawings, Figure 1 1 is a rear perspective view of a portion of an Underwood front-strike type-writing Vinachine with my improvements applied thereto, the parts being so adjusted as to cause the uppercolor-band on the ribbon to cover the printing-point at the type-strokes- Fig. ..2 is a sectinal side elevation showing the laten and the Aribbon-vibrating lever, the,

l) vFig .is a front atter in normal position.

erspective view of the -ribbon-yibrat1ng 'but showing the ribbon-vibrator elevated at the type-stroke, so that' the upper color-band 5 5v thereof covers the printing-point.. Fig. 5 is a view similar to Fig. l and showing the ribbon-vibrator still more elevated, so .thatthe lower color-band covers the printing-point? Fig. 6 is a sectional front elevationofthe 6o ribbon-vibrating lever, the actuator, andthe wrists, the upper wrist being shown in use and the lower wrist silenced 'to correspond with Figs. 1 and 4. Fig. 7 is a view similar to Fig. 6, but showing the u'pperwrist si- 65.'

lenced and the lower one in use, whereby' the' ribbonevibrating lever is given a maximum stroke to bring up the lower color-band, as

at Fig. 5. Fig'. .8 is a sectional planfo''the actuator, the wrists, and the lever, 'the'ui per 7o wrist being shown in use, as at Fig. 6. `ig. 9 is a side elevation' of the ribbon-actuator, showing the slot `therein vso shaped that the shifting of the wrists may be readilyv effected, whether the platen andl ribbon are in lowercase or in upper-case position.

- Upper and lower casetypes 1 2 are mounted upon the fron-t ends ofv typebars 3', mounted in slots 4 in al segment 5 andi provided at r their rear ends upon' a fulcrum-rod I46` toSo strike rearwardly against thefront side of a platen 7. The latter is mounted' upon a car-Y riage (not sh own) having a rolll 8 t'or'un 'upon a rail 9, and the latter is shiftable up and down together with the carriagevl and the: platen to enable the different types 1" 21to rint.

A ribbon.having upper vand lower colorbands 10 11 is threaded through a vvibrator 12 in front of the platen, which is mounted 9o upon the front end of a'lever-arm 13 'and vibrated u p and down, thereby to cause the ribbon to cover the printingepoint. Said lever is pivoted at 14 upon a bracket'15', lse cured to theshifting rail 9, so thatthe vibrator 12 and the lever 13 are shifted up and ydownwith the platen.

Heels 16 upon the ty e-bars press rearwardly a curved universa bar 17, fixed upon a horizontal table or frame 18 in the wellroo known mannen- Upon said frame is erected an actuator 19, having :aS-,vertical slot 20 to' engage either of two wrists 21 22, provided upon the .lever atditferent distances from the yi'ulcrum 14 thereof. The actuatorA 19 moves .T015

ever. Fig. 4 is -a diagram similar to Fig. 2, l backwardlyand forwardly uniorii distances bar 35, which extend in opposite directions from atter extending rear# cheek-piece 41,

wardly from 'the keys 30-A tor, and ribbon,"according toV whichof the wrists is in use. Said lever has an oiset arm 23 standing up at vone side of the actuator 19 and having perorations to fit and guide bars 21a and 22a upon the ends of whichsaidl wrists 21 22 are formed. .A bracket24projects horizontally from said lever-arm 23 and terminates ina ii'ange 25, having openings to fit and guide the outer ends of said bars 21 22, which always vibrate and shift with the lever. Said bars are formed on their adjacent edges withrack-teeth 26, `anda pinion 2.7 engagement with both rac-ks is-i ivoted between the racks upon a screw 28, w :ich is threadedinto the arm 24. By thismeans when 4either Wrist moves in the other must move out, and

hence only one wristcan at any time with the slot inthe actuator 19. A yielding -detent ,29 may engage either of a pair of notches -31 the wrist or Wristshlfted.

v At the front 32 33 are provi ed upon the ends of arms 534' the rock-shaft 36, ,the

and having at its rear end oppositely-extending frames or cranksf Upon the ends of the latter are pivoted rods 39 ltfextending inwardly toward thel wrist-bars 21a 22a and Acarrying upon their inner ends cheek-pieces`4142 in position to engage the outer ends of said wrist-bars.

When the key 33 is depressedFig. 1, the rod 39 isthrustinwardly, together with the actuator 19, and during 'such movement of the wrist the said actuator. piece 42 is withdrawn by the arm 38 on the shaft'36. Said wrist 21 is the more remote from the pivot 14 of the lever, and hence the latter is given a minimum vibration at .the so that the upper "color-band; to cover the,`

type-strokes, 1,0 of thel ribbon `is brou ht 111i printing-point. When t ot er key 32 is depressed, the rod and cheek-piece, e2

thrust the-lower wrist 22 into engagement with the actuator 20, and at the vsaine time the Wrist 21 and the cheek-piece 41 are 'Withdrawn, sok that the vwrist 22, which near-fthe pivot 14 of the lever, gives .the lattera mum stroke, and hence the ribbon is thrust up to cause the lower color-band 11 tl'vereoil'l to cover the printing-point, Figs. .5 and 7.

While the actuator 19 is illustrated as'con- -fined between the offset-atm .23 and an ex- `tension 43 ofthe lever 13,-said extension hav#- lng 'perforations '44 45 to receive the wrists- 21. 22, Figs.. Gand 7,.still it is obvious that. sald` extension 43 .may be omitted and the l be engagement' 'clannv y 21a to hold both wrists where adjustederl f l. In a type-Writing machine having' typeopenating' lneys and a--universal bar meipmr a-rt of the machine two keys and the latter forces the wrist 21 inwardly to engage the slot 20 i-n the pinion 27 is rotated and withdraws the wrist-22 from engagement with; At the same time the cheekproject 4only enough to engage 1n the actuator, they extentv of lelevated, the -ever is lelevated therewith, -towrist-bars 21a 22a, and the. ieces 41 42 have suicient area to engage t e outer ends of said wrist-bars atthev ,gether with the cheekpositions. of the latter, whether` caused' by the shifting of the rail 9 or the reciprocatioh Vof the actuator 19. Provision :may be madel for a slight play yori-"free movement of the ycheek-#pieces '41 42., so that't'he latter may not he constantly .rubbed by the endsof the Wrist-bars dining bon-vibrating leve Variations may he'resorted to within the scope oef my invention, and portions of any im rovements may be used without others. aving thus described my invention, I-

cated by said keys, the combination cinnamotuator connected to .said universal hat and having a-slo't, a ribbcn-vihrating levier, a s pmir lof wrists at-diiierentdistances from. the frulloi .said lever,l means beingy provided upon said lever for idling said wrists for axial movements, sai wrists be' mounted to workinsaid slot and being Inoixle axially lto connect said :lever w1-'1th said actuator, and I'means connecting said wrists to Vcause either wrist to shift to 4effective position :and the other wrist to becomesilenced by means of a movement thereof in the opposite direction. .2. In 'a' type-wrting machine having type- 'operating keys :and a universal Ib .ar reciprocated by said keys, the combination 1oil-an alctuator connected to said universal :bar :and havin a slot, a ribbon-vibrating lever, a air 0% wrists at diilerent distances fmomflthe l valert-1m of said lever, means being provided rupon `said lever for 'ding said wristsffor axial movements, sai wrists bei mounted to work in .said slot and beingmovxfalc axially vprojection fbeing determined by stops the movements of the rihJ IOS ieg

I'Io f to connect said lever wi'rthsaid actuator., and.'

eans connecting said wrists [to enable eitherwnist, when shifted to effective 'posiftion, to silence the other wrist, said-connecting .means includi 'racks-provided on the wrists, a pinion etween` saidfrac s :and

meshing therewith, land means supporting said im'on. n

A f3. nzatype-writing machine vhavilzig type-J operatimg keys Vand ya universal :bar recipro- -cated by said keys, the combination of an actuator connected 'to `said .universal bar, Aa ribbon-vibrating lever, a pair of Jwrists 'at didieren't distances trom the iu'lcrum of .said flevenf and means for movingsaid wrists simultaneously in op csite directions to .silence either thermf,' an xcause the other to connect said lever-to said actuator` A. Isc

silence the other.

4. lnatype-writing machine having type- 8. ln a type-writing machine having a 65 operating keys and a universal bar reciproplaten shiftable up and down, type-operating cated by said keys, the combination with a keys and a universal bar reciproc'ated by said ribbon vibrator or carrier, of shiftable means keys, the-combination with a ribbon vibrator for enabling said universalbar to vibrate said .or carrier, of shiitable means for enabling carrier different distances at the type-strokes, said universal bar to vibrate said carrier dif- 7c said vibrating means includingha lever beferent distances at the type-strokes, said vi-v tween the universal bar and t e carrier, a brating means including a lever between the pair of wrists mounted at different distances universal bar and the carrier, a pair of wrists from the ulcrum oi said lever, movementmounted at different distances from the fultransmitting means co erating with said crum of said lever, movement-transmitting 75 lever and said wrists,'an means Jfor shifting means co erating with said lever and said said -wrists axially in opposite directions at wrists, a dinger-piece, and a pair of cheekthe same time, to bring either into use and pieces controlled by said finger-piece, and

, l mounted upon the framework for shiftingl 5. In a type-writing machine having typesaid wrists axially, to bring either into use 8o operating keys and a, universal bar reciproand silenceV the other; said lever shiftable up cated by said keys, the combination with. a and down with said platen, and said cheekribbon vibrator or-carrier, of shiftable means iece of sucient area to engage said wrists Jfor enabling said universal bar 'to vibrate said in all positions of the lever. carrier diiierent distances at the type-strokes, 9. In a type-writing machine having type- 85 said vibrating means including a lever beoperating keys and a universal bar reciprotween the universal bar and the'carrier, a cated by said keys, the combination with a pairof wrists mounted at different distances ribbon vibrator or carrier, .of shiftable means from the iulcrum of said lever, movementfor enabling said universal bar tovibrate said transmitting means cooperating with said carrier dierent distances at the type-strokes, 9o lever and said wrists, a'device pivoted be- 'saidvibratingmeansincludingaleverbetween tween said wrists and extending in opposite the universal bar and the carrier, a pair of directions from its pivot to engage said 'wrists mounted at dierent distances from the wrists, and a finger-piece having means for fulcrumof saidlever,movement-transmitting shifting said wrists in axial direction, to means coperating with said lever and said 95 bring either into use and silence they other. v wrists, a device pivoted between said wrists 6. In a type-writing machine having typeand extending in op osite directions from its operating keys and a universal bar recipropivot to engage sai wrists, a pair of cheekcated by said keys, .the combination with a pieces mounted upon the framework in posiribbon vibrator or carrier, of shiftable means tion to engage said wrists, anda finger-piece roo for enabling said universal bar to vibrate having means for moving `said cheek-pieces said carrier different distances at the type; simultaneously in opposite directions.

strokes, said vibrating means including a vlel0. In a type-writmg machine having type.-

A for enabling said universal bar to vibrate ver between the universal bar and the caroperating keys and a universal barvreciprorier, apair ot wrists mounted at different discated by said keys, the combination with a fc5 tances from the Julcrum of said lever, moveribbon vibrator or carrier, of shiftable means ment-transmitting means 'cooperating with for enabling said universal bar to vibrate said lever and said wrists, means for shifting said carrier different distances at lthe typesaid wrists 'axially in opposite directions at strokes, said vibrating means including a lethe same time, to bring either into use and ver between the universal bar and the carrrc/ 'l silence the other, and yielding means Jfor derier, a pair of wrists mounted at diHerent distaining the wrists where adjusted. tances jfrom 'the fulcrum of said lever, move- 7. In a type-writing machine having typement-transmitting means coperating with operating keys an a universal bar reciprosaid lever and said wrists, a device pivoted cated by said keys, the combination with a between said wristsand extending in opporr: ribbon vibratorfor carrier, of shiftable means site directions from its pivot to engage said I l wrists, a pair of cheek-pieces mounted 'upon said carrier different distances at the typethe framework in position to engage said strokes,said vibrating means including a lel wrists, and a rock-shaft having opposite ver` between the universal bar and the cararms, rods extending from said arms to said r2 rier, a pair of wrists mounted at different discheek-pieces and a finger-piece for vturning tances from the fulcrum ofsaid lever, move- 'said rock-shaft; means-being provided upon ment-transmitting means coperating with the Jframework for guiding said'cheek-pieces. said lever and said wrists, a ringer-piece, and l GUSTAF SWENSON;

` a pair of cheek-pieces controlled by said nger-piece, and mountedv upon the Jframework Witnesses: for shifting said wrists axially, tobring either 4 C. WV. CLARKE, into use andsilence the other. el GEORGE BnNDnn. 

